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CHAPTER 22 ADDRESS MATCH DETECTION FUNCTION
22.5 Program Example of Address Match Detection Function
This section gives a program example for the address match detection function.
■ Program Example for Address Match Detection Function
●
Processing specifications
If the address of the instruction to be executed by the program matches the address set in the detection
address setting register (PADR0), the INT9 instruction is executed.
●
Coding example
PACSR0 EQU 00009EH ;Address detection control register 0
PADRL EQU 0079E0H ;Detection address setting register 0
(Low)
PADRM EQU 0079E1H ;Detection address setting register 0
(Middle)
PADRH EQU 0079E2H ;Detection address setting register 0
(High)
;
;---------Main program-------------------------------------
CODE CSEG
START:
;Stack pointer (SP), etc.,
;already initialized
MOV PADRL,#00H ;Set address detection register 0
(Low)
MOV PADRM,#00H ;Set address detection register 0
(Middle)
MOV PADRH,#00H ;Set address detection register 0
(High)
;
MOV I:PACSR0,#00000010B ;Enable address match
.
processing by user
.
LOOP:
.
processing by user
.
BRA LOOP
;---------Interrupt program-------------------------------------
WARI:
.
processing by user